High CPU usage only when tab is active
So my problem is that when I'm watching a twitch stream the CPU usage is almost 100% just from opera. Now if I switch tabs and only have it playing it the background (the tab is open and I can hear the stream) the CPU usage is only at 30-35% .
Is this intended, it there some way to not make it take so much CPU? It even starts to drop a lot of frames if I watch now.
I just upgraded to windows 10 on a bit older computer and it seems to have been a big mistake as I did not have this problem before.